I hate the age specific material. It's a hassle. I'm just trying to increase my fitness (and secretly beat a know-it-all brother who's a physician.)
I hear ya. FAct is, she is the one that has a LIBRARY full of Self-Help books that just aggravate me to no end. (to quote George Carlin:"Those are self-help books... those are just HELP.")
anyway, any book of nurtition and exercise dynamics for any age would say the same thing.
The difference between normal work out regimen vs. biking (at least for us as we do our 40-60 miles rides) is: before, I'd run/walk/lift/swim for 60+ minutes and recover. With a 40-60 mile ride, it may be... 3-5 hours on the saddle depending. That's a longer period work...
I will say that I've adjusted and it's a kick